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China has sent its coast guard into the waters of the Senkaku islands and military drones near outlying Japan's territory as China ramps up strains following the Japanese prime minister’s comments regarding the island of Taiwan.

Patrol Operations

On Sunday, the China's maritime patrol stated that its vessels carried out a “lawful patrol operation” through the waters of the Diaoyu islands, which are administered by Japan but also asserted as territory by China.

“Chinese maritime patrol unit 1307 performed surveillance within the territorial waters of the Senkaku islands. This was a lawful patrol operation undertaken by the China coast guard to uphold its rights and interests,” officials declared.

Diplomatic Spat

Beijing and Tokyo have repeatedly faced off around the islands but the latest activity occur during an escalating political dispute after the Japan's leader, Sanae Takaichi, addressed lawmakers that if Beijing assaults democratically ruled Taiwan it might provoke a armed reaction from Tokyo.

That provoked a furious reaction from China, which has indicated it demands a retraction from the Japanese official.

Island's Stance

China claims Taiwan as its own territory and intends to annex it under what it terms “reunification”. It has left open the military option. The island's administration and citizens categorically refuse the idea of Beijing's control – choosing to preserve the status quo without formally announcing independence, but pledging to protect their sovereignty if required.

An attack or invasion by China would risk escalating into a regional or global conflict, possibly drawing in the United States and other partner nations including Japan, which has territory just 68 miles from the island.

Defense Operations

In Taiwan, the military authorities reported this weekend that it had detected three dozen PLA planes, multiple naval vessels and one “official” ship, which was probably the coast guard, active near the territory over the previous day.

Official charts released showed up to three drones operating near Taiwan and the Japan's territory off its northeastern shoreline, seeming to travel particularly close to Yonaguni. PLA movements there are occasional, but uncommon, and Beijing's defense operations in Taiwan’s air defence identification zone generally has been low in the past month.

Earlier this weekend, the ministry said Beijing had been conducting another “joint combat patrol” to “harass the airspace and sea around us”. It added the island had sent its own aircraft and ships to track the developments. The island reports such Chinese patrols a few times monthly as part of what Taipei says is an ongoing military pressure campaign.

Diplomatic Pressure

Tokyo has been experiencing increased strain from China since the Japanese official made her remarks, with China’s consul general in the Japanese city triggering an official complaint from Tokyo by commenting that “those who interfere will face consequences”.

China then summoned the Japanese ambassador for the first occasion since 2023, and China’s defence ministry declared that any Japanese intervention would be doomed to fail.

Travel and Education Advisory

Late last week, China cautioned its citizens against travelling to Japan, prompting Tokyo to urge Beijing to take “appropriate measures”, though it did not elaborate.

Multiple carriers from China announced this weekend that flights to Tokyo could be cancelled without penalty.

Adding to the tensions, China’s government on Sunday urged its citizens to “carefully reconsider” studying in Japan, citing what it characterized as an volatile safety situation.

Although not an outright prohibition, a significant decrease in the population of learners from China could have a negative impact on Japanese universities. A record 336,708 foreign nationals were studying in Japan last year, according to education statistics. They included more than 123,000 Chinese students – by far the single biggest group.

Media Response

Earlier this weekend, a Chinese state media editorial accused Takaichi of staging a diplomatic maneuver that was “not just dangerously provocative but fundamentally perverse”.

“A conflict between Japan and China would not be a limited skirmish; it would likely draw in other nations, including the United States, and could quickly spiral into a major confrontation with severe repercussions.”

Policy Standpoints

The government of Taiwan says only its people can decide its future. Japanese leaders have traditionally refrained from publicly mentioning Taiwan when discussing such scenarios, maintaining a “deliberate vagueness” also favoured by Tokyo’s main security ally, the United States.

Nevertheless, Beijing's governing party says the unification of Taiwan with the mainland China is “unavoidable”, and portrays dissent as provocative. As it advances toward potential armed takeover, China has also been escalating its non-military activity and its rhetoric towards Taiwan.